package com.itheima.reggie.service.Impl;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomerException;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.pojo.Category;
import com.itheima.reggie.pojo.Dish;
import com.itheima.reggie.pojo.Setmeal;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper,Category> implements CategoryService {
    @Autowired
    private DishService dishService;  //菜品
    @Autowired
    private SetmealService setmealService;  //套餐

    @Override
    public void remove(Long id) {
        //1. 添加查询条件，根据分类id进行查询菜品数据
        QueryWrapper<Dish> queryWrapper1 = new QueryWrapper<>();
        queryWrapper1.eq("category_id",id);
        int count1 = dishService.count(queryWrapper1);
        //如果已经关联，抛出一个业务异常
        if(count1>0){
        throw  new CustomerException("当前分类下关联了菜品不能删除");
        }
        //2. 查询当前分类是否关联了套餐，如果已经关联，抛出一个业务异常
        QueryWrapper<Setmeal> queryWrapper2 = new QueryWrapper<>();
        queryWrapper2.eq("category_id",id);
        int count2 = setmealService.count(queryWrapper2);
        //如果已经关联，抛出一个业务异常
        if(count2 >0){
            throw  new CustomerException("当前分类下关联了套餐不能删除");
        }
        //3. 正常删除分类
        this.removeById(id);
    }

}
